1)Using the following returns, calculate the average returns, the variance, standard deviations and coefficient of variation for X and Y. Which stock is the least risky?

YR	RX	RY
1	12.2	9.65
2	0	-2
3	6.5	12.5
4	8	9.57

2. Using the following returns, calculate the expected returns, the variance, standard deviations and coefficient of variation for X and Y. Which stock is the least risky?

Prob	Rx	Ry
20%	12.2	9.65
30%	0	-2
25%	6.5	12.5
25% (Both 25%)	8	9.57